التفاصيل البيبلوغرافية
| العنوان: |
Comparative Analysis of Surface Energy and Water Characteristics in High Snowfall Years and Low Snowfall Years on the Qinghai-Xizang Plateau |
| المؤلفون: |
Ziyue WANG, Siqiong LUO, Wenjing LI, Jingyuan WANG, Zihang CHEN |
| المصدر: |
Gaoyuan qixiang, Vol 41, Iss 2, Pp 444-464 (2022) |
| بيانات النشر: |
Science Press, PR China, 2022. |
| سنة النشر: |
2022 |
| المجموعة: |
LCC:Meteorology. Climatology |
| مصطلحات موضوعية: |
qinghai-xizang plateau, snow cover, high and low snow fall year, soil water and heat, surface energy fluxes, Meteorology. Climatology, QC851-999 |
| الوصف: |
The snow cover on the Qinghai-Xizang Plateau has a significant effect on surface energy and water exchange.Based on the meteorological data of Madoi， Maqu and Yakou stations in the east of Qinghai-Xizang Plateau， this paper compares and analyzes the surface energy and water characteristics in high snowfall years and low snowfall years.The results show that： In terms of surface radiation balance， the years or periods with high snow can reflect more upward shortwave radiation.At Madoi station， the upward shortwave radiation which is reflected in the high snowfall year is 2.3 times that in the low snowfall year.During the main snow period （from March to May） of Maqu station， 10.07 W·m-2 upward shortwave radiation was reflected in the high snowfall period than in the low snowfall period.The mean upward shortwave radiation of yakou station in the high snowfall year was 37.49 W·m-2 and 31.92 W·m-2 higher than that in the low snowfall years， respectively.The high snowfall years or periods can also reduce the emission of upward long wave radiation.The difference of upward longwave radiation between high snowfall year and low snowfall year at Madoi station is basically negative during the whole study period.In the two low snowfall years of Yakou station， from December to January and from the end of February to the beginning of April， the deeper the snow was， the lower the upward long-wave radiation value was.Therefore， the difference between the upward shortwave radiation and the upward long wave radiation makes the surface net radiation in high snowfall years less than that in low snowfall years.The value of the soil heat flux is very small in both high and low snowfall years， and the surface energy distribution is mainly composed of sensible heat flux and latent heat flux.Madoi station is dominated by sensible heat flux in low snowfall year and it is positive.While the sensible heat flux is negative in high snowfall years.From March to May in Maqu， the snowfall is more concentrated in high snowfall year， and the surface energy distribution is mainly latent heat.At the same time， the surface energy distribution is mainly sensible heat in low snowfall year.The time of soil heat flux from negative to positive in high snowfall years is later than that in low snowfall years.Due to the heat preservation effect of the snow cover， the soil temperature and the difference between surface temperature and atmospheric temperature in high snowfall years is higher than that in low snowfall years， furthermore， the mean value of atmospheric humidity is also higher than that in low snowfall years.After the soil entering the freezing stage， the change of soil moisture in each layer decreases with time.At the depth of 5 cm， the soil moisture in high snowfall years was significantly higher than that in low snowfall years.At Maqu station， the variation of soil moisture at 10 cm to 40 cm is more obvious in low snowfall years.For the soil freezing time 20~160 cm in Yakou station， the high snowfall year is later than the low snowfall year. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
Chinese |
| تدمد: |
1000-0534 |
| Relation: |
http://www.gyqx.ac.cn/EN/10.7522/j.issn.1000-0534.2022.00017; https://doaj.org/toc/1000-0534 |
| DOI: |
10.7522/j.issn.1000-0534.2022.00017 |
| URL الوصول: |
https://doaj.org/article/19538470e02e44cda4589422615b6564 |
| رقم الانضمام: |
edsdoj.19538470e02e44cda4589422615b6564 |
| قاعدة البيانات: |
Directory of Open Access Journals |